CN104903688A - Non-resonant knock sensor - Google Patents
Non-resonant knock sensor Download PDFInfo
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- CN104903688A CN104903688A CN201380067000.7A CN201380067000A CN104903688A CN 104903688 A CN104903688 A CN 104903688A CN 201380067000 A CN201380067000 A CN 201380067000A CN 104903688 A CN104903688 A CN 104903688A
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- cylindrical portion
- side cylindrical
- fitting
- weight body
- fixed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
- G01L23/221—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
- G01L23/222—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines using piezoelectric devices
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention provides a non-resonance knock sensor which can restrain the reduction of the internal insulation and can reduce the manufacturing cost. A non-resonance knock sensor (1) includes a sensor body having: a metal shell (9) that includes a metal shell-side cylindrical portion (13) and a metal shell-side flange portion (15); a piezoelectric element (17); a weight (19) having a piezoelectric element interposed between the weight and the accessory-side flange; and a fixing portion (31) having a 3 rd through hole (31h) through which the metal fitting side cylindrical portion penetrates, the fixing portion (31) pressing the weight body toward the metal fitting side flange portion to fix the weight body, wherein the fixing portion has a flow path (31r) through which a resin flows into an internal space (20) between the metal fitting side cylindrical portion and the piezoelectric element, the flow path having at least one of a form connected to the 3 rd through hole and a form provided independently of the 3 rd through hole, and a plurality of the flow paths are provided intermittently along a circumferential direction of the fixing portion.
Description
Technical field
The present invention relates to the Non-resonance type knock sensor of the knock vibration for detecting internal combustion engine.
Background technology
There is the detonation sensor for detecting phenomenon of detonation in the internal combustion engine configurations of automobile etc., carrying out the control suppressing phenomenon of detonation to occur according to the detection signal exported from detonation sensor.Specifically, according to the output signal of detonation sensor, the delay (Japanese: Rather-late angle) carrying out the ignition timing of the spark plug changing internal combustion engine controls.
As described detonation sensor, there will be a known central part have the mounting hole that the cylinder body etc. for internal combustion engine installs, so-called central-hole Non-resonance type knock sensor (patent documentation 1).This detonation sensor is configured to: comprise main metal fixture, this main metal fixture has cylindrical portion and is positioned at the flange part of one end of this cylindrical portion, is set with the balance weight body (Japanese: ウ ェ イ ト) of the insulating component of ring-type, the piezoelectric element of ring-type and ring-type in the periphery of cylindrical portion from flange part side successively.Further, carry out locking balance weight body by external thread part balance weight body being screwed to the outer peripheral face of cylindrical portion, thus piezoelectric element is clamped and is fixed between flange part and balance weight body.And, cover by utilizing resin and main metal fixture assembles insulating component, piezoelectric element, balance weight body etc. and the internal part (sensor main body) that obtains is overall, and form detonation sensor.Wherein, the inside surface of cylindrical portion is formed as described mounting hole.
At this, insulate in order to ensure between the outer peripheral face of cylindrical portion and the inner peripheral surface of piezoelectric element, and the path that multiple notch part along axis direction is used as supplying resin inflow is set at the internal thread place of balance weight body, thus do not need to arrange resin injection hole, resin injection groove in addition, seek to reduce manufacturing cost.
prior art document
patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2008-185414 publication (Fig. 1)
Summary of the invention
the problem that invention will solve
But for balance weight body, adopt heavy wall in order to ensure weight, therefore usually by forging and the cut of metal, or the sintering of metal powder manufactures.Therefore, if in balance weight body the notch part of machining internal thread and the inflow path as resin, then there is such problem: processing cost significantly rises, cause the manufacturing cost of detonation sensor to raise on the contrary.
Therefore, the object of the present invention is to provide and a kind ofly inner insulativity can be suppressed to reduce and can seek to reduce the Non-resonance type knock sensor of manufacturing cost.
for the scheme of dealing with problems
In order to solve described problem, the resin molded body that Non-resonance type knock sensor of the present invention comprises sensor main body and utilizes resin to cover this sensor main body and formed, this sensor main body has: main metal fixture, it comprises accessory side cylindrical portion and accessory side flange portion, this accessory side cylindrical portion is formed as tubular, and this accessory side flange portion extends towards radial outside from an end of this accessory side cylindrical portion, piezoelectric element, it has the 1st through hole, and described accessory side cylindrical portion is through the 1st through hole, balance weight body, it has the 2nd through hole, and described accessory side cylindrical portion through the 2nd through hole, and is separated with described piezoelectric element between this balance weight body and described accessory side flange portion, and fixed part, it has the 3rd through hole, described accessory side cylindrical portion is through the 3rd through hole, this fixed part is fixed on the outer peripheral face of described accessory side cylindrical portion, and press described balance weight body towards described accessory side flange portion and this balance weight body is fixed, wherein, between the inner peripheral surface and the outer peripheral face of described accessory side cylindrical portion of described piezoelectric element, and there is between the outer peripheral face of the inner peripheral surface of described balance weight body and described accessory side cylindrical portion the inner space of ring-type, described fixed part has the stream making described resin flow into the described inner space everywhere between the outer peripheral face and the inner peripheral surface of described piezoelectric element of described accessory side cylindrical portion, described stream has at least one form in both the forms arranged independently with the form that described 3rd through hole connects and relative described 3rd through hole, and be provided with multiple intermittently along the circumference of described fixed part.
Adopt this Non-resonance type knock sensor, utilize fixed part fixed weight body and be provided with the stream of the inflow path as resin at fixed part, therefore do not need in balance weight body machining internal thread portion, notch part as the inflow path of resin, thus can reliably suppress inner insulativity reduce and can manufacturing cost be reduced.
Wherein, the hole wall of the form (the extension stream 33r being located at fixation side cylindrical portion 33t in Fig. 4, extension stream 33r cuts out breach by the outside surface of self-retaining side cylindrical portion 33t and is connected with the 3rd through hole) that the outside surface that stream comprises self-retaining portion for " form is connected with the 3rd through hole " is connected with the 3rd through hole and the 3rd through hole in self-retaining portion is towards expanding both the forms (the stream 31r being located at fixation side flange part 33f in stream 31r and Fig. 4 in Fig. 2) of radial outside.
Also can be that described fixed part comprises the component of a tabular, described stream through described fixed part on thickness of slab direction forms.
Adopt this Non-resonance type knock sensor, the parts number of fixed part can be reduced, and then can manufacturing cost be reduced.
Also can be, described fixed part has fixation side cylindrical portion and fixation side flange part, this fixation side cylindrical portion has described 3rd through hole and is fixed on the outer peripheral face of described accessory side cylindrical portion, this fixation side flange part extends towards radial outside from the end by described counterweight side of this fixation side cylindrical portion and presses described balance weight body towards described accessory side flange portion, be provided with in described fixation side cylindrical portion the extension stream that the outer peripheral face along described accessory side cylindrical portion extends, this extension stream is connected with described stream.
Adopt this Non-resonance type knock sensor, fixation side cylindrical portion is coated at accessory side cylindrical portion, therefore fixation side cylindrical portion becomes guiding piece and with accessory side cylindrical portion with larger contact area, thus can precision better and reliably fixed part is fixed on accessory side cylindrical portion.In addition, the extension stream being located at fixation side cylindrical portion extends along the outer peripheral face of accessory side cylindrical portion, and therefore resin easily flows into along the axis direction of accessory side cylindrical portion.
Also can be that the outer peripheral face of described accessory side cylindrical portion is fixed in the region except being formed with the region of described extension stream of described fixation side cylindrical portion.
Adopt this Non-resonance type knock sensor, fixation side cylindrical portion reliably can be fixed on the outer peripheral face of accessory side cylindrical portion, and the outer peripheral face of accessory side cylindrical portion is not fixed in the region being formed with stream of fixation side cylindrical portion, and resin therefore can not be hindered to flow into.
Also can be, external thread part is provided with at the outside surface of described accessory side cylindrical portion, described fixed part has nut portions and washer portion, this nut portions is screwed to the described external thread part of described accessory side cylindrical portion, this washer portion is between described nut portions and described balance weight body, can on thickness of slab direction elastic deflection and press described balance weight body towards described accessory side flange portion, described in the ratio that described stream is located at described washer portion, nut portions is by the position of radial outside.
Adopt this Non-resonance type knock sensor, can use in the past always by the nut portions that uses and washer portion, therefore, it is possible to reduce parts costs, and be located at the non-interfering position with nut portions due to the stream of washer portion, therefore resin easily flows into inner space.
the effect of invention
Adopt the present invention, can obtain a kind ofly inner insulativity can being suppressed to reduce and can seeking to reduce the Non-resonance type knock sensor of manufacturing cost.
Accompanying drawing explanation
Fig. 1 is the front view of the outward appearance of the Non-resonance type knock sensor representing the 1st embodiment of the present invention.
Fig. 2 is the exploded perspective view of the Non-resonance type knock sensor of the 1st embodiment of the present invention.
Fig. 3 is the cut-open view of the Non-resonance type knock sensor of the 1st embodiment of the present invention.
Fig. 4 is the exploded perspective view of the Non-resonance type knock sensor of the 2nd embodiment of the present invention.
Fig. 5 is the cut-open view of the Non-resonance type knock sensor of the 2nd embodiment of the present invention.
Fig. 6 is the exploded perspective view of the Non-resonance type knock sensor of the 3rd embodiment of the present invention.
Fig. 7 is the cut-open view of the Non-resonance type knock sensor of the 3rd embodiment of the present invention.
Embodiment
Below, the Non-resonance type knock sensor of the 1st embodiment of the present invention is described with reference to Fig. 1 ~ Fig. 3.
Fig. 1 represents the outward appearance of Non-resonance type knock sensor, and Fig. 2 represents the exploded perspective view of Non-resonance type knock sensor, and Fig. 3 represents cutting Non-resonance type knock sensor and the cut-open view obtained in the axial direction.
In FIG, Non-resonance type knock sensor 1 has at central part (with reference to Fig. 2, Fig. 3), the so-called central-hole Non-resonance type knock sensor of mounting hole 11 that the cylinder body etc. for internal combustion engine installs.The resin molded body 3 that Non-resonance type knock sensor 1 is made by the synthetic resin (such as nylon66 fiber) as resin molded material covers.This resin molded body 3 comprises element incorporating section 5 and connector portion 7, and this element incorporating section 5 is cylindrical shape, and its top is configured as taper, and this connector portion 7 is for connecting the connector from not shown ignition timing control device.
As shown in Figures 2 and 3, Non-resonance type knock sensor 1 comprises the main metal fixture 9 formed by metal material (such as SPHD, SWCH25K), main metal fixture 9 has: accessory side cylindrical portion 13, and it is drum, has mounting hole 11 for bolt insertion; And accessory side flange portion 15, its end from accessory side neck shape portion 13 (downside in Fig. 1) extends towards radial outside.External thread part 13s is provided with at the outer peripheral face of accessory side cylindrical portion 13.
Piezoelectric element 17 is placed with in one side (upper surface in Fig. 1) side of the thickness direction (direction, face) in the accessory side flange portion 15 of this main metal fixture 9, this piezoelectric element 17 has the through hole (the 1st through hole) that can run through for the periphery of accessory side cylindrical portion 13, this piezoelectric element 17 in the form of a ring (drum), is formed by piezoelectric ceramics (such as PZT).
And, balance weight body 19 is placed with in the upper surface side of piezoelectric element 17, this balance weight body 19 has the through hole (the 2nd through hole) that can run through for the periphery of accessory side cylindrical portion 13, this balance weight body 19 in the form of a ring (drum), is formed by the metal material (such as SMF4050) with the proportion that can play gaining effect.Wherein, the inside surface of the through hole of balance weight body 19 is not provided with internal thread part.
Between accessory side flange portion 15 and piezoelectric element 17 and between balance weight body 19 and piezoelectric element 17, be namely configured with in the mode contacted with piezoelectric element 17 respectively the lead-out terminal 21,23 formed by conductive material (such as brass) in the both sides of the thickness direction of piezoelectric element 17.Wherein, the part contacted with piezoelectric element 17 of lead-out terminal 21,23 is ring-type, is extended with the leading part of lengthy motion picture shape from one end of this annulus to radial outside.
In addition, the insulator 25,27 of the ring-type formed by the membranaceous synthetic resin (such as PET) with insulativity is configured with respectively between accessory side flange portion 15 and lead-out terminal 21 and between lead-out terminal 23 and balance weight body 19, to make lead-out terminal 21 not be short-circuited with the flange part 15 of main metal fixture 9, lead-out terminal 23 and balance weight body 19 are not short-circuited.
In addition, piezoelectric element 17, balance weight body 19, lead-out terminal 21 (annulus), lead-out terminal 23 (annulus), insulator 25 and insulator 27 this inner peripheral surface and the outer peripheral face of accessory side cylindrical portion 13 between be formed with the inner space 20 (with reference to Fig. 3) of ring-type, in the inner space 20 of this ring-type, be also filled with described resin.
In addition, in the upper surface side of balance weight body 19, fixed part 31 is installed, this fixed part 31 has the through hole 31h (the 3rd through hole) that can run through for the periphery of accessory side cylindrical portion 13, this fixed part 31 in the form of a ring (discoideus), presses balance weight body 19 towards direction, accessory side flange portion 15 (below with in figure) and this balance weight body 19 is fixed.
Fixed part 31 is formed by flexible metal material (such as SK-5M), is provided with internal thread part 31s at the inside surface of through hole 31h.And, the stream 31r of semicircle shape is formed respectively at 4 positions of the radial direction of through hole 31h, as the path (arrow with reference in Fig. 3) flowing into described inner space 20 for resin, each stream 31r extends to the radial outside of internal thread part 31s and through in the thickness of slab direction of fixed part 31 self.
Wherein, by main metal fixture 9, piezoelectric element 17, balance weight body 19, fixed part 31 and also comprise insulator 25,27 as required and be called " sensor main body ".Further, using axis direction as " direction, face ".
In addition, in the present embodiment, the outer circumferential side of fixed part 31 self declines towards balance weight body 19 side (below with in figure), and this fixed part 31 is " Japanese Ha word " shape when observing from axis direction section.Therefore, when fixed part 31 utilizes internal thread part 31s to be screwed on the external thread part 13s of the outer peripheral face of accessory side cylindrical portion 13, the outer circumferential side of fixed part 31 contacts with the upper surface of balance weight body 19 in the position than internal thread part 31s side on the lower, thus under the elastic reaction of fixed part 31, make balance weight body 19 to be fixed portion 31 elasticity pressing.Thus, even if there is the deformation of creep because of time lapse and cause described sensor main body to shrink on direction, face in insulator 25,27, fixed part 31 also can prevent from producing gap between balance weight body 19 and fixed part 31 along the elastic expansion of direction, face, thus can reliably fixed weight body 19.
But, when the material selecting the deformation of creep not easily occurs as insulator 25,27, fixed part 31 may not be " Japanese Ha word " shape but tabular, as long as the material selecting insulator 25,27 in conjunction with the cost of Non-resonance type knock sensor entirety, environment for use.Such as, if select the resins such as polyphenylene sulfide (PPS), polyethersulfone (PES), polyetheretherketone (PEEK) as the material of insulator 25,27, then the deformation of creep not easily occurs, but cost raises.On the other hand, if select PET as the material of insulator 25,27, then cost reduces, but has the tendency that the deformation of creep becomes large.
As described above, in the present embodiment, utilize fixed part 31 fixed weight body 19 and be provided with the stream 31r of the inflow path as resin at fixed part 31, therefore do not need in balance weight body 19 machining internal thread portion, notch part as the inflow path of resin, thus can reliably suppress inner insulativity reduce and the manufacturing cost of Non-resonance type knock sensor entirety can be reduced.
In addition, if be with flexiblely fixed weight body 19 on the direction, face of fixed part 31, even if then there is the deformation of creep because of time lapse in insulator 25,27, also can reliably fixed weight body 19, thus the material of low cost can be selected to reduce the manufacturing cost of Non-resonance type knock sensor entirety further as insulator 25,27.
Wherein, the number of stream 31r, shape and position are not limited to described, as long as stream 31r is at least provided with one.
Then, the Non-resonance type knock sensor of the 2nd embodiment of the present invention is described with reference to Fig. 4 ~ Fig. 5.Wherein, for the Non-resonance type knock sensor 1B of the 2nd embodiment, except the structure difference of fixed part 33, the Non-resonance type knock sensor 1 of remaining part and the 1st embodiment identical, therefore marks same Reference numeral to the structure with a part and omits the description.
As shown in Figure 4, in the upper surface side of balance weight body 19, fixed part 33 is installed.Fixed part 33 has: fixation side cylindrical portion 33t, and it is formed as tubular; And the end by balance weight body 19 side of fixation side flange part 33f, its self-retaining side cylindrical portion 33t extends towards radial outside.The inner side of fixation side cylindrical portion 33t is the through hole 33h that can run through for the periphery of accessory side cylindrical portion 13, and roughly discoideus fixation side flange part 33f is used for pressing balance weight body 19 towards direction, accessory side flange portion 15 (below with in figure) and this balance weight body 19 being fixed.
Fixed part 33 is formed by flexible metal material (such as SK-5M), be formed with joint-cutting (extending stream 33r) in the axial direction in two diametrically opposed positions of fixation side cylindrical portion 33t, this joint-cutting extends to the radial outside towards fixation side flange part 33f and is connected than the stream 31r of outer peripheral edges assigned position in the inner part.This stream 31r is also through on the thickness of slab direction of fixed part 33, thus formation flows into the path (arrow with reference in Fig. 5) in described inner space 20 for resin.
As described above, utilize fixed part 33 fixed weight body 19 and be provided with the extension stream 33r of the inflow path as resin at fixed part 33, therefore do not need in balance weight body 19 machining internal thread portion, notch part as the inflow path of resin, thus can reliably suppress inner insulativity reduce and the manufacturing cost of Non-resonance type knock sensor entirety can be reduced.In addition, in the 2nd embodiment, fixation side cylindrical portion 33t is coated at accessory side cylindrical portion 13, therefore fixation side cylindrical portion 33t becomes guiding piece and with accessory side cylindrical portion 13 with larger contact area, thus can precision better and reliably fixed part 33 is fixed on the outer peripheral face of accessory side cylindrical portion 13.
At this, in the 2nd embodiment, be not provided with external thread part 13s at the outer peripheral face of accessory side cylindrical portion 13, be not provided with internal thread part at the inside surface of through hole 33h yet.And, fixation side cylindrical portion 33t is coated at accessory side cylindrical portion 13, fixation side flange part 33f is utilized to press balance weight body 19 downwards, and carry out welding (laser bonding etc.) at weld part W place from outside for the region except being formed with the region extending stream 33r of fixation side cylindrical portion 33t, or, by the region except being formed with the region extending stream 33r of fixation side cylindrical portion 33t towards radially inner side crimp, thus fixation side cylindrical portion 33t can be fixed on the outer peripheral face of accessory side cylindrical portion 13.Thus, do not need the outer peripheral face threading portion in accessory side cylindrical portion 13, thus the manufacturing cost of Non-resonance type knock sensor entirety can be reduced further.
In addition, in the 2nd embodiment, also fixation side flange part 33f can be formed as: the outer circumferential side of self declines towards balance weight body 19 side, when observing from axis direction section in " Japanese Ha word " shape, thus, as already explained, though insulator 25,27 there is the deformation of creep also can reliably fixed weight body 19.
Extending the number of stream 33r, shape and position is not limited to described, as long as extend stream 33r be at least provided with one.In addition, also only stream can be provided with at fixation side flange part 33f, if but be also provided with extension stream 33r at the fixation side cylindrical portion 33t near described inner space 20, then easily make resin flow into.
Then, the Non-resonance type knock sensor of the 3rd embodiment of the present invention is described with reference to Fig. 6 ~ Fig. 7.Wherein, for the Non-resonance type knock sensor 1C of the 3rd embodiment, except the structure difference of fixed part 35, the Non-resonance type knock sensor 1 of remaining part and the 1st embodiment identical, therefore marks same Reference numeral to the structure with a part and omits the description.
As shown in Figure 6, in the upper surface side of balance weight body 19, fixed part 35 is installed.Fixed part 35 has: hexagonal nut (nut portions) 35N, and it can be screwed to the external thread part 13s of accessory side cylindrical portion 13; And pad (washer portion) 35W, it is between nut portions 35N and balance weight body 19.The inner side of nut portions 35N is the through hole 35h that can run through for the periphery of accessory side cylindrical portion 13, is provided with internal thread part 35s at the inside surface of through hole 35h.In addition, washer portion 35W is used for pressing balance weight body 19 towards direction, accessory side flange portion 15 (below with in figure) and this balance weight body 19 being fixed.
Washer portion 35W is formed by flexible metal material (such as SK-5M), can on thickness of slab direction elastic deflection.In addition, at the stream 35r being formed with multiple circular hole than nut portions 35N by the position circumferentially of radial outside of washer portion 35W.This stream 35r is through on the thickness of slab direction of washer portion 35W, thus formation flows into the path (arrow with reference in Fig. 7) in described inner space 20 for resin.Wherein, " than nut portions 35N by radial outside " refers to, maximum gauge (the external diameter of a circle of the nut portions 35N) 35D being positioned at the nut portions 35N shown in relative Fig. 7 at least partially of stream 35r, is in the position of radial outside.Thus, resin is made easily not flow into from outside intrusively by nut portions 35N.
As described above, utilize fixed part 35 fixed weight body 19 and be provided with the stream 35r of the inflow path as resin at fixed part 35, therefore do not need in balance weight body 19 machining internal thread portion, notch part as the inflow path of resin, thus can reliably suppress inner insulativity reduce and the manufacturing cost of Non-resonance type knock sensor entirety can be reduced.In addition, can use in the past always by the nut portions 35N as universal product that uses and washer portion 35W, therefore, it is possible to reduce parts costs, and be located at the non-interfering position with nut portions 35N due to the stream 35r of washer portion 35W, therefore resin easily flows in inner space 20.
At this, washer portion 35W is formed as: the outer circumferential side of self declines towards balance weight body 19 side, when observing from axis direction section in " Japanese Ha word " shape, therefore, as already explained, though insulator 25,27 there is the deformation of creep also can reliably fixed weight body 19.
The number of stream 35r, shape and position are not limited to described, as long as stream 35r is at least provided with one.
The present invention is not limited to described embodiment, self-evident, is included in various distortion in thought of the present invention and scope and equivalent example includes in the present invention.
Such as, the shape of fixed part is not limited to described.
description of reference numerals
1,1B, 1C, Non-resonance type knock sensor; 3, resin molded body; 9, main metal fixture; 13, accessory side cylindrical portion; 13s, external thread part; 15, accessory side flange portion; 17, piezoelectric element; 19, balance weight body; 20, inner space; 31,33,35, fixed part; 31h, 33h, 35h, the 3rd through hole; 31r, 35r, stream; 33r, extension stream; 33t, fixation side cylindrical portion; 33f, fixation side flange part; 35N, nut portions; 35W, washer portion.
Claims (5)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-276513 | 2012-12-19 | ||
| JP2012276513 | 2012-12-19 | ||
| PCT/JP2013/078822 WO2014097737A1 (en) | 2012-12-19 | 2013-10-24 | Non-resonant knock sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104903688A true CN104903688A (en) | 2015-09-09 |
| CN104903688B CN104903688B (en) | 2017-06-30 |
Family
ID=50978085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380067000.7A Active CN104903688B (en) | 2012-12-19 | 2013-10-24 | Non-resonant knock sensor |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9709454B2 (en) |
| JP (1) | JP5843959B2 (en) |
| CN (1) | CN104903688B (en) |
| DE (1) | DE112013006083T5 (en) |
| WO (1) | WO2014097737A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110023731A (en) * | 2016-12-01 | 2019-07-16 | 法国大陆汽车公司 | Detonation sensor with the lower flange for being provided with attachment hole |
| CN111896171A (en) * | 2019-05-06 | 2020-11-06 | 纬湃汽车电子(长春)有限公司 | Knock sensor |
| CN112444341A (en) * | 2019-08-30 | 2021-03-05 | 纬湃汽车电子(长春)有限公司 | Knock sensor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015072034A1 (en) * | 2013-11-18 | 2015-05-21 | 川崎重工業株式会社 | Engine |
| FR3047801B1 (en) * | 2016-02-12 | 2018-02-16 | Continental Automotive France | METHOD FOR FORMING AN IMPERDABLE SPACER LOCATED IN AN ACCELEROMETER SENSOR BASE AND SENSOR PROVIDED WITH SUCH A BASE |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3445452A1 (en) * | 1984-12-13 | 1986-06-19 | Robert Bosch Gmbh, 7000 Stuttgart | KNOCK SENSOR |
| US6655352B2 (en) * | 2002-02-20 | 2003-12-02 | Delphi Technologies, Inc. | Integrated bolt two-piece sleeve design for flat response knock sensor |
| JP4209829B2 (en) | 2004-10-15 | 2009-01-14 | 三菱電機株式会社 | Knock sensor and manufacturing method thereof |
-
2013
- 2013-10-24 JP JP2014512970A patent/JP5843959B2/en active Active
- 2013-10-24 WO PCT/JP2013/078822 patent/WO2014097737A1/en not_active Ceased
- 2013-10-24 DE DE112013006083.3T patent/DE112013006083T5/en active Pending
- 2013-10-24 US US14/415,336 patent/US9709454B2/en active Active
- 2013-10-24 CN CN201380067000.7A patent/CN104903688B/en active Active
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| US20040011135A1 (en) * | 1999-12-15 | 2004-01-22 | Hartmut Brammer | Vibration pickup comprising a clamping sleeve |
| CN1702440A (en) * | 2004-05-26 | 2005-11-30 | 三菱电机株式会社 | Knocking sensor for internal combustion engine and manufacturing method of the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110023731A (en) * | 2016-12-01 | 2019-07-16 | 法国大陆汽车公司 | Detonation sensor with the lower flange for being provided with attachment hole |
| CN111896171A (en) * | 2019-05-06 | 2020-11-06 | 纬湃汽车电子(长春)有限公司 | Knock sensor |
| CN112444341A (en) * | 2019-08-30 | 2021-03-05 | 纬湃汽车电子(长春)有限公司 | Knock sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112013006083T5 (en) | 2015-09-03 |
| WO2014097737A1 (en) | 2014-06-26 |
| JPWO2014097737A1 (en) | 2017-01-12 |
| US20150204750A1 (en) | 2015-07-23 |
| CN104903688B (en) | 2017-06-30 |
| US9709454B2 (en) | 2017-07-18 |
| JP5843959B2 (en) | 2016-01-13 |
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Application publication date: 20150909 Assignee: Shanghai Zhaomin New Materials Technology Co., Ltd. Assignor: NGK SPARK PLUG Co.,Ltd. Contract record no.: X2020990000055 Denomination of invention: Piezoceramic material, piezoelectric element and non-resonance knock sensor Granted publication date: 20170630 License type: Common License Record date: 20200122 |